Title role is played by Marie Windsor, the tough moll in The Narrow Margin; the hero by Jim Davis, later of Dallas. Lots of nice outdoor filming, including chases and fistfights. Stunt doubles for Windsor and Rita Hayworth lookalike Mary Castle have a rousing catfight in the latter's dress-shop. Castle plays regular, Frankie Adams, a fellow railway agent to Davis' character Matt Clark. Windsor rocks a pair of leather jeans that show off her then-slim, athletic figure.
For more on Ms. Starr: https://en.wikipedia.org/wiki/Belle_Starr